Pressurizing a gas injection type fuel injection system
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United States of America Patent
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Dec 26, 2000
Grant Date -
N/A
app pub date -
Mar 8, 1999
filing date -
Jul 10, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a method of operating an internal combustion engine (20) with a fuel injection system (11;12) including an injector (12) for delivery of a fuel-gas mixture to a combustion chamber (60) of the engine (20). The engine (20) includes a gas supply system (11;13) pressurized at start-up through a pump-up sequence to a desired pressure for injection of fuel to the engine (20). In the pump-up sequence, the injector (12) is opened allowing pressurized gas to flow from the combustion chamber (60) through the injector (12) and into the gas supply system (11;13). This pressurizes the gas supply system (11;13) when pressure in the combustion chamber (60) is higher than the pressure in the gas supply system (11;13).
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